In this video, a very sick and abandoned dog is found lying in the middle of a trash heap somewhere in Los Angeles. Volunteers at the animal rescue operation Hope for Paws had heard about the dog and brought a video camera with them to document their rescue efforts. The video might make you cry, but its ending will also undoubtedly leave you with a smile on your face.

When they found the dog, she was blind in both eyes and reportedly had the worst case of fleas they had ever seen. Throughout the video, you get to watch the dog, which they named “Fiona,” experience a miraculous recovery. After a nationwide fundraising and awareness effort, Fiona was able to receive an expensive surgery that restored vision to one of her eyes.

Fiona has since been adopted and her rescue video has become something of a hit on the Web. Here’s another video chronicling her recovery. This video was taken before she was adopted and includes scenes of Fiona wearing an unbearably adorable Santa hat.